Global Systems

3. Energy that comes from a source
4. A substance that is discharged into the atmosphere
9. All the liquid water on the Earth's surface
11. To cut down or clear away tree's
14. Takes place when water vapor in the air condenses from a gas, back into a liquid form, and leaves the atmosphere, returning to the surface of the Earth
15. Areas on Earth where the temperature in layers of soil and rock
17. The process in which something becomes a vapor
18. Sheet A layer of something that covers regions in Antarctica
19. The land masses on the Earth
22. Describes the state of the atmosphere in terms of temperature
23. A community full of organisms and habitats
24. Fuel Fuels that contain the carbon of plants and animals that died and were preserved millions of years ago
26. It is produced in the stomach of cows and sheep

1. The layers of gas surrounding the planet
2. A way the Earth's radiation is emitted
5. Constitutes 78 percent of the atmosphere by volume
6. The cycle of plants and how they make energy
7. Periods between glaciations
8. Effect The warming of the Earth caused by Greenhouse gases
10. All living things on Earth
12. Something that is deprived from two words that are temperature and salt
13. The long-term averages of weather conditions
16. A resource that can be replenished naturally
20. Nino Causes drought in Australia
21. Liquid fuels which have been derived from other materials such as waste plant and animal matter
25. Dioxide A naturally occurring compound made up of two oxygen atoms that are covalently bonded